Gearing.



No. 874,580. PATENTED DEC. 24, 1907. A. FARKAS & J. KIEFFER.

GEARING. APPLICATION FILED JAmzz. 1907.

2 SHEETS-SHEET 1. FI -2 No. 874,580 PATENTED DEG. 24, 1907.

A. FARKAS & J. KIEFPER. GEARING.

APPLIGATION FILED JAN. 22, 1907.

2 SHEETS-SHEET 2.

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ARMAND FARKAS AND JOSEPH KIEFFER, OF BILLANGOURT, FRANCE.

GEARING.

Specification of Letters Patent.

Patented Dec. 24, 1907.

Application (l'anuary 22. 1907. Serial No. 353,553.

To all whom it may concern:

Be it known that we, ARMAND FARKAS, a subject-of the Emperor of Austria-Hungary,

and JOSEPH KIEFFER, a subject of the Grand' Duke of Luxemborg, both residing at Billancourt, France, have invented certain new and useful Improvements in or Relating to Gearing, of which the following is a. specification.

This invention relates to a gearing for motor vehicles, chiefly based on the utilization of the momentum of a fly wheel rotating at great speed, the said fly wheel automatically assuming its speed when the engine is thrown out of engagement owing to the intervention of any suitable gear then transmitting to the said fly wheel the force of the engine thrown out of engagement, for subse uent utilization of the said power or force or the purpose stated.

Among other advantages, "this improved gearing enables speed reducing parts for the transmission of the driving movement at diflerent speeds to be done away with, for it constitutes a kind of condenser of the force which has not been used up to then, of the engine wbrking idly, which force, according to this invention, is now utilized. This momentum can be utilized either at one time for obtaining the starting, or intermittently for assisting in overcoming the resistance of the said vehicle when going uphill, the operating gear being suitably manipulated and throwing into engagement the device utilized for carrying out the method in uestion. By using a suitablemultiple ear it ecomes possible to drive the vehicle ackwards at a reduced speed, by means of the same mechanism.

Several constructions of mechanism suitable for carrying out the invention, are illustrated, by way of example, in the accompanying drawings.

Figure 1 is a longitudinal section of a startingmechanism embodying the invention designed also with a view to employing it to drive backwards, Fig. 2 is a cross-section on the line AA of Fig. 1, Fig. 3 is a longitudinal section of another construction of a mechanism such as is shown in Figs. 1 and 2, Fig. 4 is a cross-section on the line BB of Fig. 3', Fig. 5 also shows, in lon itudinal section, a

construction of a simpl' ed mechanism, in the sense that it no longer comprises a devicefor backward driving, Fig. 6 is a cross-section on the line C0 of Fig. 5, Fig. 7 is a construction of the preceding mechanisms. Fig. 8 is a cross-section on the line D-D of Fig. 7. I

'The. mechanism shown in Fi s. 1 and 2, comprises a ring with inner teet 1, secured to the driving shaft 2 and engaging with sat-'- ellites or loose pinions 3, of which the spindles 4 are mounted on a disk 5 secured to the driven shaft 6, transmitting the movement to the vehicle. Thedisk 5 carries also spindles 7 of other loose pinions 8 engaging, on the one hand, with the loose pinions 3, and, on the other hand, with a pinion 9 secured to the hub of a fly Wheel 10 of a sufficiently lar e diameter and sufficiently great weight. ThlS fly wheel 10 is mounted loose, either on balls or with ordinary friction, on a socket or sleeve 11 mounted on the shaft 6, so that it can slide on it longitudinally, thus accompanying the said fly wheel 10 in its longitudinal movements. The fly wheel 10, is provided, moreover, at the inner periphery of its lateral recesses, with conical surfaces 12 and 13 which respectively cooperate: the surface 12 with a cone 14 which forms the outside of the toothed ring 1, and the surface 13 with another cone 15 mounted on the driven shaft 6 so as to be able to slide longitudinally on the latter, while participating in its movement of rotation. The clutch cone 15 is exposed to the action of a strong spring 16 which has the tendency of forcing it against the fly wheel 10 and is sufficiently strong to overcome the action of another sprin 17 having the tendency to keep the sai fly wheel disengaged from the toothed ring 1.

In order to provide elastic connection be-' tween the cone 15 and,its hub 18 connected to the shaft 6, springs 19 of a suitable shape are inserted between the radial arms res ctively belonging to the said hub 18 an to the cone 15. The outer periphery of the fly wheel 10 is constituted so as to cooperate with a brake member 20, which may be a brake band or other suitable device, capable of stoppingnit.

The wor 'ng is as follows. Assuming that the cone 15 is completely disenga ed from the fly wheel 10 the latter will also e disen gaged by the action of the spring 17, from the toothed ring 1. In that position of the parts, the movement of the driving shaft 2 is transmitted by the ring 1 to the loosepinions 3 and 8 of which the spindles 4 and 7 secured longitudinal section illustrating a modifiedto the disk 5, remain fixed in space owing to the inertia of the vehicle which is supposed to be standing still. The loose inions 3 and 8 serve then'as intermediaries or transmitting to the pinion 9 of the fly wheel 10, arotation in the same direction as that of the driving shaft, at a greater speed due to the difference of the diameters of the said pinion 9 and of the toothed ring 1. The fly wheel 10 having been started in that manner with a speed greater than that of the engine, if the clutch is thrown into engagement, as soon as the cone 15 comes into contact with the fly wheel 10, it will receive from the latter astrong im pulse which will be gradually transmitted, by

the intermediary of' the springs 19, to the driven shaft 6 of the vehicle the inertia of which will then be overcome, and consequently the said vehicle will be started. By increasing then the engagement of the cone 15 with the fly wheel 10, longitudinal movement of the latter will beproduced at the same time, and the said fly wheel will engage with the toothed ring 1, the result of which will be that the parts of the mechanism will form oneblock, and that the movement of the shaft 2 will be transmitted direct to the shaft 6 of the vehicle which will thus travel forward. Owin to the combination of the two clutch mem ers 12 14 and 13 15, and of the springs 19, the action of the momentum of the fly wheel 10 is gradually transmitted to the shaft 6 without any injurious effect on the driving shaft 2. In order to bring about backward driving, the cone 1 5 beingdisengaged, it is suflicient to make the brake memer 20 act, in order gradually to stop the fly wheel 10; owing to this braking action on the fly wheel 10 and while it is taking place, the momentum of the said fly wheel 10 is absorbed by the loose pinions 3 -8 which under the impulse of the ring 1 revolve them round the pinion 9, rotating the latter backwards with 1 a speed gradually increasing as the speed of the fly wheel is being reduced. When the latter is completely stopped, the movement then transmitted, brings about the back-.

ward driving of the vehicle.

The mechanism shown in Figs. 3 and 4 is a modified construction of that shown in Figs. 1 and 2 hereinbefore described. In this modified construction, the transmission of the driving movement in the same direction from the ri 1 to the pinion 9 of the fly wheel 10, is eiflected by means of a ring 21 rotating eccentrically relatively to the shaft 6 of the vehicle, on an eccentric crank pin 22 secured to the said shaft. The ring 21 is provided with outer teeth 23 engaging with the toothed rin 1, and with inner teeth 24 engaging with t e pinion 9 of the fly Wheel 10. The other parts are arranged in the same way as the corresponding partsfin the construction illustrated in Figs. 1 and 2.

The working'is the same.

The mechanism shown in Figs. 5 and 6 is another construction of those already described, from which it difiers merely by its parts being arranged only for starting the the fly wheel 10, is effected by means of loose pinions 25, the spindles 26 of which are mounted on a disk 27 secured to the driving shaft 2. These pinions 25 engage on the other hand with a toothed ring 1 depending from the shaft 6 transmitting movement to the vehicle, and made in the interior of a drum 28 surrounding thefly wheel 10 and provided outside with the clutch cone 15 which 006 erates with a conical on 29 made in the disii 27 of the driving sha t 2. The drum 28 is provided with a flange 30 on which is mounted a brake member such as band 31 the device for operating which is combined with that for operating the clutch cone 15, so as to bring about either the throwing out of engagement alone, or the throwing out of engagement and a stoppage of the drum 28, or the throwing into engagement.

The working is as follows. Assuming that the cones 15 and 29 are disengaged, and the drum 28 standing still, the movement of the driving shaft 2 will be transmitted by the disk 27 to the spindles 26 of the pinions 25 which revolve round the toothed ring 1 which is fixed at that moment and act on the pinion of the fly Wheel 10 for rotating it in the same direction at a greater s eed than that of the driving shaft 2. If uring the time that the fly wheel 10 is thus rotating at a great speed, the braking action on the drum 28 is done away with, the momentum of the fly Wheel 10 will at once be absorbed by the ring 1, and transmitted by the said ring to the driven shaft 6 of the vehicle this action taking place before the engine is thrown into engagement. As soon as the engine has been thrown into engagement, the parts secured together will rotate at the initial speed of the engine which will then act direct on the shaft 6 of the vehicle. When going rip-hill, the throwing out of engagement will be effected alone, without applyingthe brake to the drum 28, the transmis- "sion will be effected at a reduced speed by Figs. 7 and 8, the ring 1 which transmits to the fly wheel 10 an increased speed at the moment of throwing out of engagement, is

' no longer supported in this construction the driven shaft 6 of the vehicle.

either by the driving shaft 2, as in the construction shown in Figs. 1 to 4, or by a drum 28 capable of freely rotating or of being stopped as in Figs. 5 and 6, but is secured to t The disk 27 depending on the driving shaft 2, forms a cup and is provided inside With' two conical surfaces 32 and 33, one of which, 32, cooperates with the conical periphery of the fly wheel 10, while with the other can engage the outer conical surface of the flange 35 of the casing or box 36 carrying the pinions 25. The

latter engage, on, the one hand, with the central pinion 9 secured to the fly wheel 10, and,

on the other hand, with .the toothed ring 1 depending on the driven shaft 6. The inner ion box 36, so as to be capable of longitudinally sliding on the driving shaft 2 by means of any suitable operating mechanism 40 act-v ing on the outer end of the shaft 6. The extended hub, of the fly wheel 10 is itself mounted inside the shaft 6, so as to be able freely to rotate in it, while participating in the longitudinal movement given to the ring. A spring/41 inserted between the end of the hub of the fl wheel 10 and a collar 42 of thedriv- I ing sha t 2, has the tendency of keeping the gine eing out o 5 box 36 is operated, so as to bring' its flange said fly wheel 10 inengagement with the driving cup 27. The loose pinion casing or box 36 can also be longitudinally inoved by means of a suitable operating mechanism 43,

acting on the outer. end of its hub 39 and in such manner that its conical flange engages either with the driving cup 27 or with the fixed cone 37 The working of this construction is as follows. The driving shaft 2 rotating when the vehicle is-standing still, and the fly wheel 10, as well as the loose inionbox 36 being disengaged, the said sha t 2 freely rotates Without transmitting any movement. This osition of parts corresponds-to the enengagement. The vehicle still standing still and braked,- if the. pinion into engagement withthe driving cup '27, the

flywheel 10 will be rotated at a greater speed than that of the engine. Infact, the ring 1 secured to the shaft 6, being unable to rotate,-

theloose pinions 25 will'revolve in the interior of the said ring 1 and transmit'to the central pinions 9 aniincreased'speedi'n the same direction. The flywheel 10, thus idly rotating at a greater speed than that of the 'initial speed of the engine.

driving shaft 2, acquires a very great momentum which is utilized to roduce and. facilitate the starting of the veiiicle, as soon as the said fly wheel is brought into engagement with the driving cup 27. In fact, as soon as the said engagement has taken place, the momentum of the fly wheel is transmitted to the cup 27 and added to its driv ing action. As, on the other hand, the said cup is in engagement with the pinion box 36, it follows that the said force acts by means of the central pinion 9, at the same time as by means of the loose pinions 25, in order to drive the ring 1, and consequently the shaft 6, at the As soon as the fly wheel is disengaged from the-cup 27, the shaft 6 has tendency to move slower, but the fly wheel 10 acts by its momentum to maintain the movement of the vehicle until its speed reaches its maximum." It will be seen from the above that, when going uphill, the momentum of the flywheel 10 could be utilized at any moment in order to assist by-successively repeated operations of throwing out of engagement and into engagement, the

traveling of the vehicle as already explained.

pinions 25 rotating in place, as intermediaries for reverslng the dlrection of rotation.

What Weclaim as our invention and desire to secure by Letters Patent is 1. The combination of 'a driving shaft, a driven shaft, a fly-Wheel normally rotating in unison with said shafts, and means whereby motion is imparted from the drivingshaft t0 the fly-wheel when the driven shaft is disconnected'from the driving shaft.

2. The combination of a driving shaft, a

driven shaft, a fly-wheel normally rotating in unison with said shafts, and means whereby motion is, imparted from the driving shaft to the fly-wheel to causethe fly-wheel to rotate at a greater speed than the driving shaft when the driven shaft is disconnected from the driving shaft.

- 3. The combination of a driving shaft, a

driven shaft, a fly-wheel normally rotating in unison with said shafts, means whereby motion is imparted from the driving shaft to the fly-wheel when the driven shaft is disconnected from the drivin shaft, and means for transmitting the motion from the flywheel to the driven shaft.

4. The combination of a driving shaft, a driven shaft, a fly-wheel normally connected to both of said shafts to rotate in unison therewith, means for breaking the connection between the fly-wheel and the driven shaft, and means whereby the fly-wheel is rotated by the driving shaft when the connection is broken between the fly wheel and the driven shaft.

5. The combination of a driving shaft, a driven shaft, a fly-wheel, a connection between the fly-wheel and the shafts causing the parts to rotate in unison, means for interrupting said connection, and a gearing between the driving shaft and the fly-wheel whereby the motion is transmitted tothe flywheel only when said connection is interrupted. I

6. The combination of a driving shaft, a

driven shaft, a ring secured to the drivingshaft and having inner teeth and an outer conical surface, a disk connected to the driven shaft, a lurality of loose inions mounted on the disk and engaging said ringteeth, a second disk mounted on the driven shaft and capable of moving longitudinally thereof and provided with a conical surface, a fiy-wheel mounted on the driven shaft and capable of moving longitudinally thereof,

and provided with a pair of conical friction surfaces ada ted to engage the corresponding surface on tfie ring and on said second disk, a pinion on the fiy-wheel hub, a second series of loose pinions mounted on said first-named disk and engaging the first-mentioned loose pinions and the fiy-wheel hub pinion, a spring tending 'to hold the ring surface out of engagement with the fly-wheel.coned surface, a second spring tending to hold the second disk in engagement with the coned surface of the fly-wheel, and a brake member operatively connected to the fly-wheel.

In testimony whereof we have signed our names to this specification in the presence of two subscribing Witnesses.

ARMANI) FARKAS. JOSEPH KIEFFER. Witnesses:

- EDWARD D. DIESEL,

JACK H. BAKER. 

